If you cannot recover your key and support cannot help you, you don't have to throw away your hardware.

Some versions of Honestech software distributed by partners like SIIG use a standardized key. While version 10.0 Deluxe usually requires a unique key, some users have successfully used the following SIIG-distributed key for various Honestech installations: Standard Key VHS3G-NML9G-4GG9E-H3345-DBM9D SIIG, Inc. Key Features of Version 10.0 Deluxe Upgrading Honestech VHS to DVD 5.0 Deluxe to 8.0

If you have lost your key but still have your hardware, you aren't necessarily out of luck.